Presentation Details
| The vocal repertoire of nesting Åga (Mariana Crow, Corvus kubaryi) Andria K Stafford, Anne B Clark. Binghamton University, Binghamton, New York, USA |
Abstract
The Åga (Mariana Crow, Corvus kubaryi), is a critically endangered Pacific Island endemic. Few recordings exist of this disappearing species and its vocal repertoire has never been acoustically or functionally characterized. This study describes the diversity and functions of calls used by wild breeding pairs of Åga as recorded on their nesting territories. Spectrographic analyses of these recordings were used to identify discrete calls and their contexts in the Åga’s repertoire. This study provides a description of the vocal repertoire used by pairs of adult Åga through stages of nesting, as recorded by automated recording units (ARUs) near wild nests. We describe eight separate call types, including two, the alarm call and contact call, which occurred at higher rates when a nest was disturbed. Nestling exposure to adult calls may be critical for normal vocal development and important for conservation actions.
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No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, including photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the author.
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